MESON Chess Problem Database

Problem Display
PID: 274505 (3K2b1/4p1Pp/2PpR3/2PkP1RN/1Qp3B1/2ppB3/7b/2rN4 w - - 0 1)

Palazon, Luis Gomez

The Problemist, 2023

3K2b1/4p1Pp/2PpR3/2PkP1RN/1Qp3B1/2ppB3/7b/2rN4

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxc4#
    • 1...Kxc6
      • 2.Bf3#
    • 1...Bxe6
      • 2.Bf3#
  • Tries
    • 1.Kd7?
      • threat
        • 2.Bf3#
      • 1...Ke4
        • 2.Qxc4#
      • 1...Bxe6+!
    • 1.Kxe7?
      • threat
        • 2.Bf3#
      • 1...Ke4
        • 2.Sf6#
        • 2.Qxc4#
      • 1...Kxc6!
    • 1.Sxc3+?
      • 1...Kxc6
        • 2.Bf3#
        • 2.Qb5#
        • 2.Qb6#
      • 1...Rxc3!
    • 1.Sf4+?
      • 1...Ke4
        • 2.Qxc4#
      • 1...Kxc6
        • 2.Bf3#
        • 2.Qb6#
      • 1...Bxf4!
    • 1.Sf6+?
      • 1...Kxc6
        • 2.Bf3#
        • 2.Qb6#
      • 1...exf6!
    • 1.Rxd6+?
      • 1...Ke4
        • 2.Rd4#
      • 1...exd6!
    • 1.Qxc4+?
      • 1...Kxc6
        • 2.Bf3#
      • 1...Kxc4!
    • 1.Qb7?
      • threat
        • 2.c7#
      • 1...Rb1
        • 2.Sxc3#
      • 1...Ke4!
    • 1.exd6+?
      • 1...Kxc6
        • 2.Bf3#
        • 2.Qb6#
      • 1...Be5!
    • 1.c7?
      • threat
        • 2.Qb7#
      • 1...Ke4
        • 2.Qxc4#
      • 1...Kc6
        • 2.Bf3#
      • 1...Rb1!
  • Keys
    • 1.Rxe7!
      • threat
        • 2.Bf3#
      • 1...Ke4
        • 2.Sf6#
      • 1...Kxc6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(f);N_GUARD,P_SPINP(e),S_FLIGHT::QAR2(C),XP(e)
    • K(f);N_GUARD,P_SPINP(g),S_FLIGHT,XP(I)::B(D)
    • B(j);SBLOCK,XR(J)::B(D)
  • Tries
    • Try
      • K(L);P-FLIGHT
      • Threat
        • B(D)
      • Vars
        • K(f);N_GUARD,P_SPINP(e),S_FLIGHT::QAR2(C),XP(e)
      • Refutation
        • B(j);CHECK,XR(J)
    • Try
      • K(L);S_FLIGHT,XP(h)
      • Threat
        • B(D)
      • Refutation
        • K(f);P_SPINP(g),S_FLIGHT,XP(I)
    • Try
      • S(A);CHECK,XP(c)
      • Refutation
        • R(a);XS(A)
    • Try
      • S(H);CHECK
      • Vars
        • K(f);N_GUARD,P_SPINP(e),S_FLIGHT::QAR2(C),XP(e)
      • Refutation
        • B(b);XS(H)
    • Try
      • S(H);CHECK
      • Refutation
        • P(h);XS(H)
    • Try
      • R(J);CHECK,XP(g)
      • Vars
        • K(f);OGATE,P_SPINP(e),S_FLIGHT::R1(J)
      • Refutation
        • P(h);XR(J)
    • Try
      • Q(C);CHECK,XP(e)
      • Vars
        • K(f);N_GUARD,P_SPINP(g),S_FLIGHT,XP(I)::B(D)
      • Refutation
        • K(f);S_FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAB(C)+P(I)
      • Vars
        • R(a);N_GUARD::S(A),XP(c)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • P(F);CHECK,XP(g)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • P(I);
      • Threat
        • QAB(C)
      • Vars
        • K(f);N_GUARD,P_SPINP(e),S_FLIGHT::QAR2(C),XP(e)
        • K(f);N_GUARD,P_SPINP(g),S_FLIGHT::B(D)
      • Refutation
        • R(a);
  • Actual
    • R(J);XP(h)
    • Threat
      • B(D)
    • Vars
      • K(f);N_GUARD,P_SPINP(e),S_FLIGHT::S(H)
      • K(f);OGATEB,S_FLIGHT,XP(I)::QAB1(C)
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